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The Wharfdale Two-Feeder Printing Press

Scientific Education for Women

Habits of the Striped Squibbel--A White Wood-Chuck

Ancient and Modern Coinage

Improved Match Safe

The Bee-Eating Sand-Wasp

The Mammoth Cave and the Cave Regions of Kentucky


Patent Office Affairs- June 25, 1870

Six Mouths of Progress in Mechanical and Civil Engineering

Danger of Explosion and Collapse in Kitchen Boilers-How to Avoid it

The Dawn of an Important Industry

The Close of Volume XXII

Instruments for Sounding Alarms

Extension of a Sewing Machine Patent

Civilization Versus Nature

St. Anthony's Nose and the Manufacture of Sulphuric Acid

Recent American and Foreign Patents- June 25, 1870

Official List of Patents- June 25, 1870

Answers to Correspondents- June 25, 1870


  • Departments

    Business and Personal- June 25, 1870

  • Index- June 25, 1870

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June 25, 1870